One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,7)(3,8,4,6)(9,10,12,14)(11,15,16,13)(19,26)(20,21)(23,31)(24,29)(27,32)(28,30)(1,2)(3,6)(4,8)(5,7)(9,11)(10,13)(12,16)(14,15)(17,18,22,25)(19,27,28,23)(20,29,21,24)(26,32,30,31)(11,16)(13,15)(17,19,22,28)(18,23,25,27)(20,26,21,30)(24,32,29,31)(1,3,5,4)(2,6,7,8)(10,14)(13,15)(17,18)(19,23)(20,29)(21,24)(22,25)(26,31)(27,28)(30,32)(1,4,5,3)(2,6,7,8)(17,20,22,21)(18,24,25,29)(19,26,28,30)(23,32,27,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.